We Promised to Build Infrastructure, but You Let Me Control the Underworld

Qin Feng, a senior civil engineer, was unexpectedly forced to recruit by the "Underworld Urban Construction Bureau". There are cracks in the Naihe Bridge, the Wangchuan River bursts its banks... The underworld projects are all dregs of thousands of years. Qin Feng used scientific norms and metaphysical methods to vigorously rectify the infrastructure of the underworld. Is this a lack of technology? Or moral turpitude? Or is there a shocking conspiracy hidden?